Evaluation of influence of densities and weaves on physical and mechanical properties of »squared« cotton woven fabrics

Abstract

In order to evaluate the influence of densities and weaves on mechanical properties of squared cotton woven fabrics and to estimate the damages of yarns which occur during the weaving process, as well as to predict the values of breaking force and breaking elongation, 23 samples of fabrics were woven. All samples were designed and produced in an original way under the same production conditions. The simplest method for calculating tensile characteristics of fabrics based on the conditions of measurement, number of threads in fabrics, and breaking force and elongation of individual threads was used. A very good correlation between the theoretically calculated and the measured values of breaking force was found. The prediction of breaking elongation of a fabric depends highly on the chosen density as well as on the selected weave. The correlation between the predicted and measured values is substantially lower, however, similar to the case of breaking force, it can be described with a linear relationship. The measurement results were evaluated with the modem statistical methods ANOVA and PCA. The statistical findings confirmed conclusions based on classical analyses of measured results. Moreover, the interaction between the influential parameters (ANOVA) and correlations among individual physical and mechanical properties of fabrics were identified and visualized (PCA).